Cabletron Systems Lancast Media Converter 7000 User Manual

Contents

Alarm Configuration4-2Basic Alarm ConfigurationUsing the Advanced Alarms feature, you can define custom alarms for almost anyMIB-II or RMON object, as long as it is present in the device firmware and itsvalue is defined as an integer (including counters, timeticks, and gauges). Allaspects of these alarms are user-selectable: thresholds can be established on eitherthe absolute or delta value for a variable; events can be configured to create a log,generate a trap, or both; and for devices that support the new Actions MIB, eventscan also be configured to perform any defined SNMP SET or series of SETs ondevice objects. The Advanced Alarms feature also allows you to configure anyevents you wish to use in conjunction with the Packet Capture functionality. (Formore information on using the Packet Capture feature, see the RMON User’sGuide.)The Basic Alarms feature allows you to assign alarms to any interface type; usingthe Advanced Alarms feature, you need only be sure to select variablesappropriate to the interface — Ethernet for Ethernet, Token Ring for Token Ring,etc. — when defining your alarms.Basic Alarm ConfigurationUsing the Basic Alarm Configuration application, you can define both rising andfalling alarm thresholds for three selected MIB-II objects: ifInOctets, ifInNUcast,and ifInErrors. Because these pre-selected objects are not RMON-specific, you canconfigure alarms for all interfaces installed in your SmartSwitch 7000 hub —including those, like FDDI, for which no specific RMON statistics currently exist.In addition to configuring separate rising and falling thresholds, you can alsoconfigure your device’s response to an alarm condition: when a threshold iscrossed, the RMON device can create a log of alarm events, send a trap notifyingyour management workstation that an alarm condition has occurred, or both; youcan even configure an alarm to enable or disable bridging on the offending port inresponse to a rising or falling alarm condition.TIPAs long as there is at least one Ethernet or Fast Ethernet module installed in yourSmartSwitch 7000 chassis, you can use the RMON Alarms feature to configure alarmsfor MIB objects on FDDI, ATM, and other interfaces that don’t specifically supportRMON: the Basic Alarms window provides MIB II objects as alarm variables; AdvancedAlarm configuration allows you to select any object as an alarm variable, as long as itsvalue is defined as an integer and you assign the correct instance value. See step 5 onpage 4-17 and the Note which follows it for more information on assigning the correctinstance value to an advanced alarm.